David's Astronomy Pages Images - Session 1138 (2023-09-03)

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Session Notes

C/2019 T4 (ATLAS) - Comet C/2020 R7 (ATLAS) - Comet C/2023 E1 (ATLAS) - Comet     Nova Cas 2021 - Nova (V1405 Cas) AT 2022vqu - CV Type Transient (Attempt) AT 2023vn - Type ulens? Transient AT 2023hsf - Transient (Attempt) AT 2023rao - Transient     Nova M31 2023-05b? - Extragalactic Nova, AT2023ksu in M31  (Attempt) M33 - Spiral Galaxy with Transient AT 2023nou M101 - Spiral Galaxy with Type IIL Supernova 2023ixf MCG -1-60-15 - Spiral Galaxy     NGC 2326 - Spiral Galaxy with Type II Supernova 2023pgb NGC 7495 - Spiral Galaxy with Type II Supernova 2022ubb     UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut UGC 9002 - Spiral Galaxy with Type II Supernova 2023pls UGC 9350 - Spiral Galaxy with Type Ib Supernova 2023nny     - C/2023 P1 (Nishimura) attempt failed (comet not visible in images, despite a forecast mag of 7.1)     Variable Stars (photometric monitoring) - RX And, BL Lac, GK Per      Nearby Stars (astrometric monitoring) -  Barnards Star, Groombridge 34   -

- Attempted all-night session (7.2 hrs) with no interruptins     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 8.5°C (min) - CCD Temperature:  -10°/-15° C - Notes from 2023-09-03 >>     -

C/2019 T4 (ATLAS) - Comet

C/2019 T4 (ATLAS) - 2023-09-03 (passing through Serpens) Sun Distance 5.61 AU (receeding) Earth Distance 5.90 AU (882.3 million km)		C/2019 T4 (ATLAS) - 2023-09-03 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 20.52 arcsec/hr, Dec -9.28 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-03 22:25 UT (#1138044-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-03 22:28 UT (#1138044-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2019 T4 (ATLAS) on Comets 2023 Page >>

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C/2020 R7 (ATLAS) - Comet

C/2020 R7 (ATLAS) - 2023-09-03  (passing through Corona Borealis) Sun Distance 4.49 AU (receeding) Earth Distance 4.79 AU (715.8 million km)		C/2020 R7 (ATLAS) - 2023-09-03 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 3.80 arcsec/hr, Dec -9.33 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 6 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-03 22:15 UT (#1138035-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) Image details as left
Images of C/2020 R7 (ATLAS) on Comets 2023 Page >>

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C/2023 E1 (ATLAS) - Comet

C/2023 E1 (ATLAS) - 2023-09-03 (passing through Pegasus) Sun Distance 1.46 AU (receeding) Earth Distance 0.46 AU (68.7 million km)		C/2023 E1 (ATLAS) 2023-09-03, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 32.18 arcsec/hr, Dec -233.63 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 45s exposure (single frame), 3x3 binning, Clear Filter 2023-09-03 23:18 UT (#1138085) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) 12 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-09-03 23:19 UT (#1138078-91) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2023 E1 (ATLAS) on Comets 2023 Page >>

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Nova Cas 2021 - Nova (V1405 Cas)

Nova Cas 2021 (Cassiopeia) Nova in Cassiopeia discovered 2021-03-18.4236,  by Yuji Nakamura (Japan) Magnitude at discovery +9.6 (unfiltered CCD) AT2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia Alias: Gaia21bpe, AT2021hkn, V1405 Cas

Nova Cas 2021 - 2023-09-04 (T+899.7d) Image below (2023-09-04.085) was taken 899.7 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +12.20

Annotated CCD Image (100% size, linear scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 02:04 UT (#1138158-62) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Cas 2021 (V1405 Cas) Spectra - 2023-09-04 (T+899.7d)

Spectra produced in AstroMain using Image taken with Star Analyser 200 5 x 60s exposure (average combine), 2x2 binning, S Filter 2023-09-04 02:08 UT (#1138163-67) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova Cas 2021 on Novae Page >>

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AT 2022vqu - CV Type Transient (Attempted Observation)

AT 2022vqu (Cepheus) AT 2022vqu (Type: CV) discovered 2022-09-22.525 UT by Gaia Alias: Gaia22dzp Alerting Mag +16.83 (g-ZTF Filter)  (vs Historic Mag +19.68) Outburst in known CV (ROTSE3 J203224.8+602837.8)  ( TNS 2022vqu | Gaia22dzp )

AT 2022vqu - 2023-09-04 (T+346.5d) Image below (2023-09-04.047) was taken 346.5 days after discovery of 2022vqu Position of earlier reported transient (faded / not visible) is shown by white cross-hairs

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 01:11 UT (#1138132-36) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022vqu on Transients 2022 Page >> >>

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AT 2023vn - Type ulens? Transient

AT 2023vn (Cygnus) AT 2023vn (Type: ulens?) discovered 2023-01-16.206 UT by Gaia Alias: Gaia23ahn Alerting Mag +14.15 (G-Gaia Filter)  (vs Historic Magnitude +14.43)  ( TNS 2023vn | Gaia23ahn )

AT 2023vn - 2023-09-03 (T+230.7d) Image below (2023-09-03.951) was taken 230.7 days after discovery of 2023vn Position of transient is shown by white cross-hairs Measured magnitude +13.35

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-03 22:58 UT (#1138070-74) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023vn on Transients 2023 Page >> >>

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AT 2023hsf - Transient (Attempted Observation)

AT 2023hsf (Draco) AT 2023hsf (Type: unk) discovered 2023-05-08.430 UT by ZTF Alias: ZTF23aaixebv Discovery Mag +16.34 (g-ZTF Filter)  ( TNS 2023hsf )

AT 2023hsf - 2023-09-04 (T+118.6d) Image below (2023-09-04.033) was taken 118.6 days after discovery of 2023hsf Position of earlier reported transient (faded / not visible) is shown by white cross-hairs

Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 00:56 UT (#1138124-28) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023hsf on Transients 2023 Page >> >>

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AT 2023rao - Transient

AT 2023rao (Pegasus) AT 2023rao (Type: unk) discovered 2023-08-16.381 UT by Gaia Alias: Gaia23bxu Alerting Mag +16.92 (G-Gaia Filter)  (vs Historic Magnitude +17.65) Brightening in Gaia, WISE and UV source  ( TNS 2023rao | Gaia23bxu )

AT 2023rao - 2023-09-03 (T+18.6d) Image below (2023-09-03.979) was taken 18.6 days after discovery of 2023rao Position of transient is shown by white cross-hairs Measured magnitude +16.32

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-03 23:39 UT (#1138094-98) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023rao on Transients 2023 Page >>

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M31 2023-05b? - Extragalactic Nova, AT2023ksu in M31   (attempted observation)

M31 with Nova M31 2023-05b? (Andromeda) Nova M31 2023-05b? (Type: unk) discovered 2023-05-28.063 UT by Kamil Hornoch et al. Alias: PNV J00421981+4107048, AT2023ksu Located 276".7 west and 543".7 south of the center of M31 Discovery Mag 17.59 (r-ZTF Filter)  ( TNS 2023ksu | Rochester, Extragalactic Novae - 2023 )

Nova M31 2023-05b? - 2023-09-04 (T+99.0d) Image below (2023-09-04.063) was taken 99.0 days after discovery of Nova M31 2023-05b? Position of earlier reported transient (faded / not visible) is shown by white circle

Annotated CCD Image (70% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 01:39 UT (#1138144-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova M31 2023-05b? (M31) on Transients 2023 Page >> >>

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M33 - Spiral Galaxy with Transient AT 2023nou

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M101 - Spiral Galaxy with Type IIL Supernova 2023ixf

M101 with SN 2023ixf (Ursa Major) SN 2023ixf (Type: IIL) discovered 2023-05-19.727 UT by Koichi Itagaki Alias: ZTF23aaklqou, AT2023iyi, AT2023jgd, AT2023jfz, PSN J14033858+5418421, PS23dij Discoverer Mag 14.9 (Clear filter)  ( Rochester Supernova site | TNS 2023ixf )

M101 with SN 2023ixf - 2023-09-03 (T+107.2d) Image below (2023-09-03.908) was taken 107.2 days after discovery of 2023ixf Position of supernova (still distinct but slowly fading) is shown by white cross-hairs Measured Magnitude +13.48

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-03 21:57 UT (#1138028-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023ixf (M101) on Supernova 2023 Page

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MCG -1-60-15 - Spiral Galaxy

MCG -1-60-15 - Spiral Galaxy Alias :  PGC 71954

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 00:24 UT (#1138108-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

MCG -1-60-15 - Detail

Annotated CCD Image (150% size, square root scale, cropped) Image details as above

MCG -1-60-15 with SN 2022wsr (Aquarius) SN 2022wsr (Type: II) discovered 2022-10-02.269 UT by ZTF Alias: ZTF22abjvyib Discovery Magnitude +17.86 (g-ZTF Filter)  ( TNS  2022wsr )

MCG -1-60-15 with SN 2022wsr - 2023-09-04 (T+336.7d) Image below (2023-09-04.010) was taken 336.7 days after discovery of 2022wsr Position of earlier reported SN (no longer visible) shown by white cross-hairs

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 00:24 UT (#1138108-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2022wsr (MCG -1-60-15) on Supernova 2022 Page >>

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NGC 2326 - Spiral Galaxy with Type II Supernova 2023pgb

NGC 2326 with SN 2023pgb (Lynx) SN 2023pgb (Type: II) discovered 2023-08-12.496 UT by ZTF Alias: ZTF23aaxdfya Discovery Magnitude 17.44 ( r-ZTF)  ( TNS 2023pgb )

NGC 2326 with SN 2023pgb - 2023-09-04 (T+22.6d) Image below (2023-09-04.126) was taken 22.6 days after discovery of 2023pgb Position of reported SN (faint) is indicated by white cross-hairs. Measured Magnitude +17.59 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 03:11 UT (#1138185-89) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023pgb (in NGC 2326) on Supernova 2023 Page >>

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NGC 7495 - Spiral Galaxy with Type II Supernova 2022ubb

NGC 7495 with SN 2022ubb (Pegasus) SN 2022ubb (Type: II, z=0.01628) discovered 2022-09-13.498 UT by ATLAS Alias: ATLAS22bekt Discovery Magnitude +18.125 ABMag  ( TNS 2022ubb )

NGC 7495 with SN 2022ubb - 2023-09-03 (T+355.5d) Image below (2023-09-03.994) was taken 355.5 days after discovery of 2022ubb Position of earlier SN (faded & no longer visible) shown by white cross-hairs

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 00:01 UT (#1138101-05) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 7495 with SN 2022ubb - Earlier Image 2022-09-18 (T+5.5d) Image below (2022-09-18.975) was taken 5.5 days after discovery of 2022ubb Position of SN (faint) shown by white cross-hairs Measured magnitude ? (unable to isolate in SExtractor)

Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2022-09-18 23:35 UT (#1039146-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2022ubb (NGC 7495) on Supernova 2022 Page >>

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UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut

UGC 3174 with SN 2023mut (Orion) SN 2023mut (Type: IIb) discovered 2023-07-11.180 UT by ASAS-SN Alias: ASASSN-23fh Discovery Magnitude 15.2 (g-Sloan Filter)  ( TNS 2023mut )

UGC 3174 with SN 2023mut - 2023-09-04 (T+54.9d) Image below (2023-09-04.110) was taken 54.9 days after discovery of 2023mut Position of reported SN (distinct & stable?) is indicated by white cross-hairs. Measured Magnitude +14.91

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 02:47 UT (#1138177-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023mut (in UGC 3174) on Supernova 2023 Page >>

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UGC 9002 - Spiral Galaxy with Type II Supernova 2023pls

UGC 9002 with SN 2023pls (Bootes) SN 2023pls (Type: II) discovered 2023-08-14.976 UT by ATLAS Alias: ATLAS23red, Gaia23cbq Discovery Magnitude 17.54 (cyan-ATLAS) z (redshift) = 0.0136  ( TNS 2023pls | Gaia23cbq )

UGC 9002 with SN 2023pls - 2023-09-03 (T+19.9d) Image below (2023-09-03.868) was taken 19.9 days after discovery of 2023pls Position of reported SN (faint) is indicated by white cross-hairs. Measured Magnitude +16.84 Poor quality image (cloud / bright sky background)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-03 20:55 UT (#1138008-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023pls (in UGC 9002) on Supernova 2023 Page >>

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UGC 9350 - Spiral Galaxy with Type Ib Supernova 2023nny

UGC 9350 with SN 2023nny (Bootes) SN 2023nny (Type: Ib) discovered 2023-07-20.221 UT by ALeRCE Alias: ZTF23aaszwst Discovery Magnitude 17.72 ( g-ZTF Filter) vs Last Non Detection 20.49 limiting mag  ( TNS 2023nny )

UGC 9350 with SN 2023nny - 2023-09-03 (T+45.7d) Image below (2023-09-03.894) was taken 45.7 days after discovery of 2023nny Position of reported SN (not separatably distinguishable) is indicated by white cross-hairs. Measured Magnitude +14.96 (nucleus + SN)

Annotated CCD Image (175% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-03 21:37 UT (#1138020-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023nny (in UGC 9350) on Supernova 2023 Page >>

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